<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>新建一个h5页面</title>
    <style>

        #myCanvas {
            background-color: black;
            width: 600px;
            height: 300px;
        }

    </style>
</head>
<body>
<canvas id="myCanvas">该浏览器不支持canvas</canvas>
</body>
</html>